Possibly damanged Trinity while trying to RGH

[Vampirtc]

Friend of mine soldered cables from RGH and lifted R3B15 trace. After that console wouldn't boot. After I fixed the trace console boots, but not when DVD drive is attached. Most of the time the green light just shines and console doesn't boot, but a few times it boots but I get E64. Same with RGH dashboard. I tried with another drive, same error. I tried another power and SATA cables as well. I also measured (compared) resistance from R3B15 and it is the same as with another Trinity I have.

Is there anything else around Hana that would cause this or possibly something else damaged?

Here is the picture of the board where I fixed the trace:

 

[Martin C]

Check R3B14 too.

 

[Vampirtc]

Checked, I can't measure anything wrong with R3B14.

 

[360backupman]

Perhaps try a piece of wire or try tapping into the trace a little further back to prevent any chance of grounding it out or interference. I've fixed a few of these with a piece of kynar and then soldering it to the trace. If it isn't connected the console won't boot but even fixed you can easily attach your coolrunner wire and continue.

 

[Martin C]

Issues where it won't boot with a DVD/HDD connected are normally caused by adjacent resistors to STBY_CLK. It's possible it's R3B17 which is the issue, as this looks like it's been soldered to.

 

[Oggy]

I shall work out what each resistor does shortly, as Ive only checked 2.

 

[Vampirtc]

I measured resistance and got the following values:

New Broken
R3B12 33,5 33,5
R3B13 34 34
R3B14 34 33,9
R3B15 33,3 33,7
R3B17 33,9 34
R3B19 33,6 33,5
R3B21 34 33,7
R3B23 33,4 33,7

 

[Martin C]

How are you measuring? Use points on the same trace as then you can be sure that the resistors are also soldered correctly. It's one thing to check the value by touching either side of the resistor - it's another to make sure it's properly in-circuit.

 

[Vampirtc]

I measured on each side of the resistor, now I used traces for RB17 and got the same values as on a working Xbox (I measured both resistors). Didn't check others because I don't have the tools to safely scratch contacts.
Is there anything else I can try?
I also redid broken pad.

Measured:

 

[Martin C]

Why does R3B17 look like it's been soldered to?

 

[Vampirtc]

It hasn't been. Its possible when he tried to solder B15 he may have touched B17.

But you were probably right, I think its B14. Took me some attempts before I could measure resistance in first tests, I though it was because of bad contact.
Now I can't get any reading anymore, neither does the connection between points left and right from B14 work. But B14 doesn't look it has even been touched.

 

[Martin C]

This issue normally is with B14, which is why it was my first suggestion

My advice would be remove the resistor and test off circuit, then clean the pads and resolder back.

 

[Vampirtc]

Thank you, I have removed the resistor and circuit seems good:

 

[Martin C]

So still the same?

C3B8 has solder on it. On some consoles, this has a resistor between the two points...

 

[Vampirtc]

When I removed the resistor console works the same as before, but when I bridged the connections where the resistor is supposed to be the console works *with* DVD drive attached.
I tried to measure resistor and I think its dead.

Should I finish the console without resistor or replace it? Value is 40 Ohm?

Regarding C3B8 the other console I have, doesn't have it either and its not possible he could have removed it.

 

[Oggy]

33 Ohms for R3B14

 

[Martin C]

When I removed the resistor console works the same as before, but when I bridged the connections where the resistor is supposed to be the console works *with* DVD drive attached.
I tried to measure resistor and I think its dead.

Should I finish the console without resistor or replace it? Value is 40 Ohm?

Regarding C3B8 the other console I have, doesn't have it either and its not possible he could have removed it.

Yep, your above test proves the resistor was at fault. as Oggy says (and your posts previously on testing another board), it's a 33ohm resistor.

 

[Vampirtc]

Thank you very much. Seems to be working but I'll test it for a while before its finished.